Bunker Hill, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.4 °C (low) to 19.5 °C (high). Annual precipitation averages 680.2 Millimeters. Bunker Hill is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.7 °C | 5.3 °C | 16.76 mm |
| February | -6.2 °C | 7.8 °C | 23.37 mm |
| March | -1.1 °C | 13.7 °C | 35.05 mm |
| April | 4 °C | 18.9 °C | 54.61 mm |
| May | 10.6 °C | 24.2 °C | 105.92 mm |
| June | 16.7 °C | 30.6 °C | 85.34 mm |
| July | 19.3 °C | 33.4 °C | 104.39 mm |
| August | 18.2 °C | 31.9 °C | 96.52 mm |
| September | 13.2 °C | 27.7 °C | 55.88 mm |
| October | 5.7 °C | 20.7 °C | 50.04 mm |
| November | -1.3 °C | 12.9 °C | 28.45 mm |
| December | -6.3 °C | 6.3 °C | 23.88 mm |
| Annual | 5.4 °C | 19.5 °C | 680.21 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |